Universal joint.



No. 779,903. PATENTED JAN. 10, 1905. F. E. BOCORSELSKI.

UNIVERSAL JOINT.

APPLICATION FILED 0(]T.1 1904.

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UNITED STATES Patented January 10, 1905.

PATENT OFFICE.

FRANK E. BOCORSELSKI, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO BAUSHMACHINE AND TOOL COMPANY, OF SPRINGFIELD, MASSA- CHUSETTS, A CORPORATIONOF MASSACHUSETTS.

UNIVERSAL JOINT.

SPECIFICATION forming part of Letters Patent No. 779,903, dated January10, 1905.

Application filed October 1, I904. Serial No. 226,748.

a citizen of the United States of America, and a resident ofSpringfield, in the county of Ham pden and State of Massachusetts, haveinvented certain new and useful Improvements in Universal Joints, ofwhich the following is a full, clear, and exact description.

This invention relates to improvements in IQ universal joints of thevery common class which comprises endwise-opposite forks having theirpairs of jaws arranged in longitudinal planes which intersect each otherat right angles and which are articulated to a central 5 member ortransmission-block.

The object of the invention is to so construct and combine the parts ofthe joint as to render not only possible but very quick and easy theadjustment of either or both of the 2C fork members transversely oftheir axis and relatively to the transmission-block for the mostsuitable alinement of the fork members with respect to thetransmission-shafts in connection with which the joint is combined.

5 The improvements are especially applicable for universal joints to beused asa part of the transmission connections or mechanism inautomobiles, although available otherwise.

The invention consists in a universal joint 3 having a fork memberthereof combined with a central member or transmission-block providedwith axially-alined oppositely-extending externally-screW-threadedtrunnions having the distance between their ends less than the Width ofthe space between the fork-jaws and having cndwise-open sockets, studsengaged through the forkjaws and protruding into the trunnion-sockets,With capability of play between the studs and socketed trun- 4 nions,and nuts screw-threading on the trunnions and setting against the innerfaces of the fork-jaws.

The invention, furthermore, consists in further features, specificcombinations, and arrangements and details of construction of certain ofthe parts, all substantially as fully described and set forth in theclaims.

The improved universal joint is fully and clearly illustrated in theaccompanying drawings, in which- Figure 1 is a side view with portionsshown in central section. Fig. 2 is a cross-section on line 2 2, Fig. 1.Figs. 3, 4, 5, and 6 are side views, in detail, of parts of the joint tobe hereinafter particularly referred to.

Similar characters of reference indicate corresponding parts in all ofthe views.

In the drawings, A A represent the two fork members of the joint, eachhaving a pair of jaws a a, the inner faces of which are flat andparallel with each other, and the fork members are arranged, as usual,with their central median planes intersecting each other at rightangles. The pairs of jaws for the forks are constructed with the alinedround holes 7)?) 5 through them, which are internally screwthreaded andwhich extend at right angles to the axis of the shank o of the forkmember A.

B represents the central member or transmission-block of the joint,having the oppo- 7 site pairs of trunnions (Z, both trunnions of onepair being axially alined, one alined pair arranged at right angles tothe other alined pair, and all of the trunnions are externallyscrew-threaded, as indicated at f, and all of the trunnions are providedWith axial endwiseopening sockets g. The distance between the ends ofthe pairs of trunnions is less than the width of the spaces between theinner faces of the respective pairs of the jaws, as represented in thedrawings.

D D represent studs having their enlarged outer end or head portionscrew-threaded and screw-engaged in the round holes 7) in thc fork-jaws,while the inner extremities of said 5 studs, which are preferably roundin crosssection and of reduced diameter, protrude inwardly for a properswivel-bearing fit in the sockets g in the trunnions of the centralmember. 9

7 represent locking-pins transversely penetrating the fork-jaws and theportions of the aforesaid studs D, which are screw-engaged therein, theoutwardly protruding smaller ends of the locking-pins j, which pins areshown tapered, having cotter-pins k, preferably split spring-pins, whichincrease the certainty of confinement of the locking means for thestuds.

mm represent ring-nuts screw-threading on the outer end portions of thetrunnions and arranged to be turned and set against the inner faces ofthe respectively adjacent fork-jaws. The nuts m m may be appropriatelytermed ad justing-nuts, while the similar ring-nuts 0 0, screw-threadingon the trunnions next to and inside of the adjusting-nuts, are jam orlocking nuts to be set against the inner faces of the adjusting-nuts forlocking the latter in their adjustments. In case one of the fork membersdoes not in any situation aline as may be desired with the other forkmember or with any transmission-shaft in conjunction With which thisuniversal joint is employed the proper adjustments of either fork bodilytransversely in relation to the transmissionblock or central member andin relation to the axis of the relatively opposite fork member may beeasily accomplished by the manipulation of the nuts for the proper pairof the trunnions, one pair 0 m of the nuts being positioned fartherinwardly on the one trunnion, while the other pair of nuts 0 m arepositioned outwardly on the other trunnion of the alined pair oftrunnions.

Capability of lubrication of the parts having bearings for freeswiveling motions in the jointthat is, the cylindrical inner portions ofthe studs D and the surrounding walls of the cylindrical sockets g-isprovided for in a simple and satisfactory manner by making recesses inor apertures through the trunnions, communicating with the walls of thesocket g7, and advantageously, as represented at z, in the drawings,inserting with a tight fit or suitable degree of binding sections orblocks a.

of absorbentmaterial-such, for instance, as

felt which are or may be saturated with oil. The oil taken from thesection of felt onto the dowel or stud effectually lubricates the latterand the socket-wall in which it fits.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. In a universal joint a fork member and the central member providedwith axiallyalined, oppositely s extending, externallyscrew-threadedtrunnions, having the distance between their ends less than the width ofthe space between the fork-jaws, and having endwise-open sockets, studsengaged through the fork-jaws and protruding into the trunnionsockets,and nuts, screw-threading on the trunnions and setting against the innerfaces of the fork-jaws.

Q. In a universal joint, a fork member hav ing in its jaws the alinedscrew-threaded openings, and the central member provided with alined,externally-screw-threaded trunnions, having the distance between theirends less than the width of the space between the fork jaws, and havingendwise-open sockets, studs having their outer end portions threaded andscrew-engaged through the threaded openings in the fork-jaws, and havingtheir inner extremities protruding into the trunnion-sockets, and nuts,screw-threading on the trunnions, and setting against the inner faces ofthe fork-jaws.

3. In a universal joint, a fork member, and the central member providedwith alined externally-screw-threaded trunnions, having the distancebetween their ends less than the width of the space between thefork-jaws, having cndwise-open sockets, and constructed with aperturesintersecting the said sockets, studs engaged through the fork-jaws andprotruding into the trunnion-sockets, sections of absorbentlubricant-carrying material engaged in said apertures, and nuts,screw-threading on the trunnions, and setting against the inner faces ofthe fork-jaws.

4. In a universal joint, a fork member and the central member providedwith alined eX- ternally-screw-threaded trunnions, having the distancebetween their ends less than the width of the space between thefork'jaws, and having endwise-open sockets, studs engaged through thefork-jaws and protrudinginto the trunnionsockets, locking pins passingtransversely through the fork-jaws and the outer end portions of saidstuds, and nuts, screw-threading on the trunnions, and setting againstthe innerfaces of the fork-jaws.

5. In a universal joint, a fork member and the central member providedwith alined externally-screw-tln'eaded trunnions, having the distancebetween their ends less than the width of the space between thefork-jaws, and having endwise-open sockets, studs engaged through thefork-jaws and protrud ing into the trunnionsockets, ad justing-nutsscrew-threading on the trunnions and setting against the inner faces ofthe fork-jaws, and locking-nuts also screwthreading on the trunnions andsetting against the inner faces of the locking-nuts.

6. In a universal joint, the pair of fork members,and the central memberprovided with two pairs of externally-screw-threaded axiallyalinedtrunnions, one pair being arranged at right angles to the other,havingthe distances between their ends less than the widths of thespaces between the respective pairs of forkjaws, and all havingendwise-open sockets, studs engaged through the forkjaws and protrudinginto the trunnion-sockets and nuts screw-threading on the trunnions andsetting against the inner faces of the fork-pairs.

Signed by me at Springfield, Massachusetts, in presence of twosubscribing witnesses.

FRANK E. BOCORSELSKI.

\Vitnesses:

VVM. S. BuLLows, G. R. DRISCOLL.

